/*
 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
 *           (C) 2000 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef SKY_ENGINE_PLATFORM_TRANSFORMS_MATRIXTRANSFORMOPERATION_H_
#define SKY_ENGINE_PLATFORM_TRANSFORMS_MATRIXTRANSFORMOPERATION_H_

#include "flutter/sky/engine/platform/transforms/TransformOperation.h"
#include "flutter/sky/engine/platform/transforms/TransformationMatrix.h"

namespace blink {

class PLATFORM_EXPORT MatrixTransformOperation : public TransformOperation {
 public:
  static PassRefPtr<MatrixTransformOperation> create(double a,
                                                     double b,
                                                     double c,
                                                     double d,
                                                     double e,
                                                     double f) {
    return adoptRef(new MatrixTransformOperation(a, b, c, d, e, f));
  }

  static PassRefPtr<MatrixTransformOperation> create(
      const TransformationMatrix& t) {
    return adoptRef(new MatrixTransformOperation(t));
  }

  TransformationMatrix matrix() const {
    return TransformationMatrix(m_a, m_b, m_c, m_d, m_e, m_f);
  }

  virtual bool canBlendWith(const TransformOperation& other) const {
    return false;
  }

 private:
  virtual bool isIdentity() const override {
    return m_a == 1 && !m_b && !m_c && m_d == 1 && !m_e && !m_f;
  }

  virtual OperationType type() const override { return Matrix; }

  virtual bool operator==(const TransformOperation& o) const override {
    if (!isSameType(o))
      return false;

    const MatrixTransformOperation* m =
        static_cast<const MatrixTransformOperation*>(&o);
    return m_a == m->m_a && m_b == m->m_b && m_c == m->m_c && m_d == m->m_d &&
           m_e == m->m_e && m_f == m->m_f;
  }

  virtual void apply(TransformationMatrix& transform,
                     const FloatSize&) const override {
    TransformationMatrix matrix(m_a, m_b, m_c, m_d, m_e, m_f);
    transform.multiply(matrix);
  }

  virtual PassRefPtr<TransformOperation> blend(
      const TransformOperation* from,
      double progress,
      bool blendToIdentity = false) override;

  MatrixTransformOperation(double a,
                           double b,
                           double c,
                           double d,
                           double e,
                           double f)
      : m_a(a), m_b(b), m_c(c), m_d(d), m_e(e), m_f(f) {}

  MatrixTransformOperation(const TransformationMatrix& t)
      : m_a(t.a()),
        m_b(t.b()),
        m_c(t.c()),
        m_d(t.d()),
        m_e(t.e()),
        m_f(t.f()) {}

  double m_a;
  double m_b;
  double m_c;
  double m_d;
  double m_e;
  double m_f;
};

}  // namespace blink

#endif  // SKY_ENGINE_PLATFORM_TRANSFORMS_MATRIXTRANSFORMOPERATION_H_
